Search International and National Patent Collections

1. (WO2017203247) DOWN-HOLE CHEMICAL HEATER AND METHODS OF OPERATING SUCH

Pub. No.:    WO/2017/203247    International Application No.:    PCT/GB2017/051457
Publication Date: Fri Dec 01 00:59:59 CET 2017 International Filing Date: Thu May 25 01:59:59 CEST 2017
IPC: E21B 36/00
E21B 33/13
E21B 33/134
Applicants: BISN TEC LTD
Inventors: CARRAGHER, Paul
BEDOUET, Sylvain
Title: DOWN-HOLE CHEMICAL HEATER AND METHODS OF OPERATING SUCH
Abstract:
The present invention provides a chemical heater for use in down-hole operations together with methods for operating such in oil/gas wells. The chemical heater comprises a heater body (1) housing a chemical reaction heat source material (2). The heater body (1) has a leading end that, in use, is deployed down-hole first. The heater is provided with ignition means (3), located in a heating zone proximal to the leading end of the heater body, for triggering a chemical reaction in the chemical reaction heat source material located in the heating zone (4, 4a). The heater is further provided with an actuator (5,6) housed within the heater body (1 ) and configured to urge the chemical reaction heat source material (2) towards the heating zone so as to generate a focused heating pattern.